well, its in german and i do not speak german, however it is a w123 230e diagram!

http://roger.klimke.free.fr/cariboost1/cariboost_files/230e_ce_seit_7_80_bild_text_c.jpg

this is the root site which has information on the ka and ke jetronic and a bunch of other usefull stuff in german...lol...

http://www.thomconsulting.de/MB/w123.htm